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import asyncio
from bleak import BleakScanner, BleakClient
import time, calendar
async def sync(device_name: str):
print(f"Scanning for {device_name}...")
device = await BleakScanner.find_device_by_name(device_name, timeout=10)
if not device:
print("Watch not found!")
return
print(f"Found at {device.address}")
try:
async with BleakClient(device) as client:
ts = int(time.time())
offset = calendar.timegm(time.localtime()) - calendar.timegm(time.gmtime())
packet = bytes([0x01]) + ts.to_bytes(4,'big') + offset.to_bytes(4,'big') + bytes([0,0,0])
await client.write_gatt_char("6E40FC20-B5A3-F393-E0A9-E50E24DCCA9E", packet)
print(f"Time synced! ts={ts} offset={offset}")
except Exception as e:
print(f"Failed: {e}")
if __name__ == "__main__":
watch_name = input("Enter watch name shown in BLE discovery (default: Watch ULTRA): ")
if watch_name == "":
watch_name = "Watch ULTRA"
asyncio.run(sync(watch_name))
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